Part A
AD627BRZ
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6920 ПКС
- Package
- SOIC-8
- Series
- Линейные - Усилетели - Приборы, ОП Усилетели, Буферные Усилетели
Replacement verdict
Compatible functional replacement candidate
The AD627BRZ-R7 and AD627BRZ are functionally equivalent micropower instrumentation amplifiers that share the same core die, package, and electrical specifications; the only distinction is the tape-and-reel packaging of the -R7 variant, making them interchangeable for design and production purposes.
Amplifier Architecture
High match
Package Type
High match
Electrical Specifications
High match
Packaging Format
Validation required
Parts at a glance
Part B
AD627BRZ-R7
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6496 ПКС
- Package
- SOIC-8
- Series
- Линейные - Усилетели - Приборы, ОП Усилетели, Буферные Усилетели
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD627BRZ-R7 | AD627BRZ | Why it matters |
|---|---|---|---|
| Amplifier Type | Instrumentation Amplifier | Instrumentation Amplifier | Confirms both parts are the same functional amplifier type, ensuring circuit topology compatibility. |
| Number of Channels | 1 | 1 | Single-channel configuration must match for direct substitution in a given signal path. |
| Supply Voltage Range | 2.2 V to 36 V (single), ±1.1 V to ±18 V (dual) | 2.2 V to 36 V (single), ±1.1 V to ±18 V (dual) | The supply range determines whether the part can operate in the target system's power rails. |
| Gain Range | 1 to 1000 (set by external resistor) | 1 to 1000 (set by external resistor) | Gain flexibility must match to preserve the required signal amplification in the application. |
| Input Offset Voltage (max) | ±150 µV | ±150 µV | Offset voltage affects DC accuracy; identical values ensure equivalent precision performance. |
| Input Bias Current (max) | 27 nA | 27 nA | Bias current impacts error in high-impedance sensor interfaces; matching values preserve accuracy. |
| Gain Bandwidth Product | 80 kHz (G = 1) | 80 kHz (G = 1) | Bandwidth limits the maximum signal frequency the amplifier can handle; must be equivalent for signal fidelity. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range must cover the application environment for reliable operation. |
| Package / Mounting | 8-SOIC, Surface Mount | 8-SOIC, Surface Mount | Package and mounting style must match for PCB footprint and assembly compatibility. |
| Packaging / Ordering Format | Tape & Reel (R7 suffix) | Tube / Bulk | Packaging format affects manufacturing handling and pick-and-place assembly; the electrical part is otherwise identical. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD627BRZ | AD627BRZ-R7 |
|---|---|---|
| Part Status | Active | Active |
| Amplifier Type | Instrumentation | Instrumentation |
| Number of Circuits | 1 | 1 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 0.06V/µs | 0.06V/µs |
| -3 dB Bandwidth | 80 kHz | 80 kHz |
| Current - Input Bias | 2 nA | 2 nA |
| Voltage - Input Offset | 25 µV | 25 µV |
| Supply Current | 60µA | 60µA |
| Current - Output / Channel | 25 mA | 25 mA |
| Voltage - Supply Span(Min) | 2.2 V | 2.2 V |
| Voltage - Supply Span(Max) | 36 V | 36 V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between AD627BRZ-R7 and AD627BRZ?
Both parts are the same AD627BRZ device in an 8-lead SOIC package; the "-R7" suffix denotes a tape-and-reel packaging option (7-inch reel, 750 pieces per reel), while AD627BRZ is typically supplied in standard tube or tray packaging. Electrical performance and die are identical.
Are AD627BRZ-R7 and AD627BRZ electrically and functionally interchangeable?
Yes. Both are the AD627B grade (SOIC-8) instrumentation amplifier with the same specified gain range (5 to 1000), supply range (±2.3 V to ±18 V), and offset voltage grade. The only difference is the shipping package format, so they are interchangeable in the application circuit.
What is the gain range and gain-setting method for these parts?
The AD627 is a micropower instrumentation amplifier whose gain is set by a single external resistor between the RG pins, with a gain range of 5 to 1000. Gain follows the manufacturer-specified equation G = 5 + (200 kΩ / RG).
What supply voltage range do AD627BRZ and AD627BRZ-R7 support?
Both parts operate from a single supply of 2.3 V to 18 V or a dual supply of ±2.3 V to ±18 V, per the AD627 datasheet. The B grade is specified over the industrial temperature range of −40 °C to +85 °C.
Why would a design choose the -R7 reel version over the standard AD627BRZ?
The -R7 tape-and-reel format is intended for automated pick-and-place SMT assembly lines, providing a 7-inch reel with 750 units for high-volume production. The standard AD627BRZ packaging is more suitable for low-volume, prototyping, or tube-fed assembly.
Do AD627BRZ-R7 and AD627BRZ differ in package or pinout?
No. Both are offered in the same 8-lead SOIC (R-8) package with identical pin functions: −IN, +IN, RG, −VS, REF, VOUT, +VS, and RG. PCB land patterns and footprint are the same for both ordering codes.
What are the key AC specifications of the AD627B grade?
Per the AD627 datasheet, the B grade provides 77 dB minimum CMRR at G = 5 (83 dB at G = 100), 0.03 % maximum gain error at G = 5, and a gain bandwidth product of 80 kHz typical. These specifications apply equally to AD627BRZ and AD627BRZ-R7.
Can AD627BRZ-R7 and AD627BRZ be used in single-supply battery-powered designs?
Yes. Both parts are specified for single-supply operation down to 2.3 V with a typical supply current of 60 µA, making them suitable for battery-powered and portable instrumentation applications. The rail-to-rail output stage supports low-voltage single-supply signal chains.